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Okay, let's try to understand bash shell scripting.

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A shell script can be as simple as a number of commands that is sequentially executed.

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Don't forget where a shell script is coming from.

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It's related to the shell, and the shell is a common command interpreter on Linux.

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Bash is the de facto standard shell, and for that reason,

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a bash shell script can be as simple as listing a number of commands in an automated way.

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Shell scripts often work with variables, and that makes them react differently in different environments.

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And that allows you to pick up site-specific information from your shell script.

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And to make your shell script a bit more complex, conditional statements such as for and if and case and while can be used.

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Shell scripts are common as they are easy to learn and implement.

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Also, a shell will always be available to interpret code from shell scripts.

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Even in the most minimal Linux distribution that you will ever work with,

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there will always be a bin.sh, which is the old-born compatible shell.

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So you can always run a shell script.

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And if the scripts are using internal commands only, which are commands that are a part of the bash shell,

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then they are fast as nothing needs to be loaded from disk.

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And there is no need to compile anything in a shell script.

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Also, there are no modules to be used in the bash script, which makes them rather static.

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And bash shell scripts are not idempotent.

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And for that reason, there will always be a place for shell scripts on Linux,

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and that is why you need to learn shell scripts.

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But there is also a need for more advanced languages, such as Python, for instance.

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In the next couple of videos, you are going to learn about the basics of setting up an efficient shell script.

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The purpose here is to get you started, not to get in-depth and discuss all the different options that are available,

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because even bash shell scripts can be quite advanced.